Thanks to a leaked slide, some rumored release dates for upcoming T-Mobile 4G devices have been cemented. First up is Dell's Streak 7, which is set to debut on February 2; that will be followed by the Galaxy S 4G on February 23, while the Honeycomb-sporting G-Slate won't be launching until March 23.

Also leaked were two promos for the Streak 7 that nail down an on-contract (presumably) price of $299 - a pretty good deal for two cores and 7 inches of screen real-estate.

While we weren't exactly impressed by the Streak 7 at CES, Dell's upcoming tablet successor to the similarly-named phone may be arriving on T-Mobile rather soon - say, February 2nd. A photo of an internal T-Mobile document (courtesy of TmoNews) taken by the world's worst photographer all but makes official a February 2nd release date for the 4G tablet.

At T-Mobile's press schmoozing session this evening, a few HSPA+ devices were available for the blogging masses to clench in their clammy hands. One in particular that we were keen to try was the Dell Streak 7, the new big brother of the original Dell Streak (Mini 5), announced earlier today. With the 7" tablet boasting a Tegra II dual-core processing unit, our interest was piqued, so we took a look in the video below:

As you can see, the performance fell short of the hype and anticipation that many of us felt with this CES's dual-core bonanza.

Looks like T-Mobile's not planning on resting on its laurels in the 4G tablet wars: they've just officially announced the Dell Streak 7 will be coming in the following weeks. At the same time, they're also promising to increase 4G speeds in the coming year, aiming to double download speeds. Impressive, especially considering just how far behind T-Mobile was in coverage just a few short years ago.

Froyo for AT&T's version of the Dell Streak has certainly been long in the making - and it looks like it AT&T still isn't ready to release it - but users who simply can't wait any longer now have an option, albeit an unofficial one.

CyanogenMod 6.1 Alpha has just been ported over to the 5-inch tabletphone, and while the experience is said to be imperfect as it stands, WiFi, Bluetooth, 3G, and hardware acceleration are reportedly all in working order.

As we mentioned over the weekend, the UK Dell Streaks were on the verge of finally getting that sweet, delicious Froyo upgrade, and now we are able to provide the rollout schedule in more detail.

Starting November 15th, which is pretty much now, carrier unlocked devices will start to receive OTA (over-the-air) notifications allowing the Froyo update to be downloaded and applied. Carrier locked Streak OTAs will follow later on in December due to having to jump through extra hoops, i.e.

This one is definitely, definitely, firmly in the rumor bin, folks - and if history teaches us anything, it's that in the Android community rumors tend to stick to the lines of "Somebody tells you something somewhat ridiculous, but plausible. Post. Watch it spread like wildfire." Still, sometimes we get things right, too, and with that in mind, I present to you the Dell Opus One.

AndroidPolice render of the Dell Opus One

The Opus One was leaked by somebody who attended a private Dell presentation.

Who thinks strictly black and gray phones are gloomy and boring? I do and, thankfully, so does Best Buy. A few months ago, the retailer announced an exclusive white EVO 4G, and today we got word of not 1 but 2 more white Android phones arriving on October 24: Verizon's Samsung Fascinate and AT&T's slightly outdated Sony Ericsson Xperia X10. While the exact pricing on either of these is unknown, you can head over to Best Buy today and reserve the device of your dreams with a $50 deposit.

As you may be aware, Dell Streak owners have not exactly been sitting on the cutting edge of Android (the device runs 1.6 Donut) since the phone was released stateside. While a leaked and tweaked build of the UK version's 2.1 update has been floating around for a while now, the average user doesn't want to take the time or risk in using an unsupported software build.

Not a whole lot to see here, folks: Dell has honored its obligation and released the source code for the Streak (sans the proprietary bits). The benefits of this are the same as they were when Samsung released the source code for the Epic, so I'll just quote what I said then:

What does this mean to you? That devs can begin to tweak the software based off the stock build, and it can make developing a custom ROM a bit easier.